参数估计

This paper utilizes FFT after undersampling to analyze the relationship between the estimation of sinusoidal parameters and corresponding actual values on the basis of bandpass sampling theorem. In addition, the errors of parameter estimation using phase difference are deduced strictly.

摘要该文从带通采样定理出发，分析了欠采样后利用FFT估得的正弦信号参数与真实值之间的关系，并对欠采样下基于相位差分法的参数估计的误差进行了严格的推导。

The model selection and parameters optimization for analog channel were discussed. The Laplace model and the Gauss model in common used in the video frequency were researched.

讨论了模拟信道的模型选取和参数优化，研究了视频序列中常用的Laplace模型和Gauss模型，提出了一种带校正系数的虚拟相关信道参数估计方法，验证了虚拟相关信道更接近残差数据的真实分布。

Moreover, the mean-square tracking error can be made arbitrarily small by choosing some design parameters appropriately. Even with unmodeled dynamics and bounded disturbances presented the controller has good robust performance without need of correct dynamic model and parameter estimation.

并且这种控制器的设计不需要有精确的系统动态模型，不需要未知参数来满足线性依赖条件，不需要具体的系统参数估计，即使存在未建模动态和有界扰动，系统仍然具有很好的鲁棒性。

So this paper proposed joint Kalman filter by incorporating the unknown model parameters into augmented state transition matrix to avoid the special parameter estimation process, which reduced the size of calculation as well as improved the processing gain.

为此，提出将未知参数合并到增广状态矩阵的联合卡尔曼滤波方法，避免了专门的参数估计过程，在提高增益性能的同时有效降低了计算量。

It consists of three components: the parameters estimating on-line; the calculating of closed-loop critical gain K and frequency ω; evaluating the PID parameters to enable the closed-loop syetem with the given phase margin.

该算法有三部分组成：在线参数估计；计算系统在比例控制下的闭环临界振荡频率ω和临界增益K；确定PID控制器参数使闭环系统具有给定的相位裕量。

An iterative estimation procedure is adopted to process the nonlinearity in the collinearity equations and the correlation of the exterior parameters.

为解决共线条件方程的非线性以及外参数之间的相关性问题，采用迭代方式进行参数估计。

The nonlinear parameter estimation technique can simultaneously estimate the thermal conductivity,heat transfer coefficient and absorbed energy.

采用非线性参数估计可同时估计出热扩散率、散热系数以及试样吸收的能量。

The method offers a new throughway for designing and studying motion control system.

基于状态估计、参数估计的控制方法典型的如：基于卡尔曼滤波理论的时

We present a linear method for motion estimation by correspondences of two regions in terms of moment tensors and weak perspective approximation.

在用线对应作运动估计的研究中，我们提出了两帧图象内多个平面约束的运动参数估计方法。

Based on a multivariate extension of the constrained locally polynomial estimator of Ait-Sahalia and Duarte (2003), we provide one of the first nonparametric estimates of probability densities of LIBOR rates under forward martingale measures and state-price densities implicit in interest rate cap prices.

根据局部性 Ait-Sahalia 与 Duarte (2003)多项式估计的多元扩展，我们提供了基于远期鞅方法首个伦敦银行同业拆借利率非参数估计的概率密度，以及隐性利率上限价格中的国家价格密度。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。